Finding the Fourth Proportional to 142,077.96, 213,128.46 and 47,304.72

Step by Step Solution

1. Step 1: Write the proportion equation
   142,077.96 : 213,128.46 = 47,304.72 : x
2. Step 2: Convert to fraction form
   142,077.96/213,128.46 = 47,304.72/x
3. Step 3: Cross multiply
   142,077.96x = 213,128.46 × 47,304.72
4. Step 4: Simplify right side
   142,077.96x = 10,081,982,124.33
5. Step 5: Solve for x
   x = 10,081,982,124.33/142,077.96
6. Step 6: Final answer
   x = 70,960.92